Bayonet wire cutter



- wire offers 'very little resistance so that the Patented May 29, 1923;

.I'Ernn munennnowsxv, or PROVIDENC ,nrronn-" snann.

navonn'r WIRE CUTTER.

"Application ma November 2%,}1920. Seria1 N10 42 6 7( )G.

To all whom it may canoe mt: v a

; Be it known that PETER PAU GRABowsKY,

a citizenof the United States, residing at Providence, in the county of'Providence and State of Rhodelsland, has inventedcertain new and useful Improvements in Bayonet Wire Cutters, of whichthexfollowing isa specification, reference being; had to the ac;

V companying, drawings. v v

This invention relates tovrwire, cutters. and

particularly to bayonet wire cutters.

An objectof the invention is to provide a wire cutterof this character whichis incorporated in the structure ofthe bayonet andpcapable of operating,automatically.- 3

Another object is to-provide.avwiref'cutter of this character which doesfnot. interfere, with the use of the bayonet orthe attachment of the samelto the gun and issoarranged that jammingot the parts is-"impossible, i c

, Another object of thelinvention isto provide a wire cutter of .this'character which 1s operated by pressure of the gun against. the wire to be cut, thepressure of the gununder said circumstances; being so greatv that the cutting is performed without difliculty. I

Another object is to provide a wire cutter of this character includinga bayonet having a chamber adj acent' the hilt in which a pair: of wirekcutting implements are pivotally mounted, said implements being also I pivoted to each other, the pivotal portion of oneof the implements serving to bend the wireso as to facilitate cutting when the cutthe guide to direct the wire to the cutter and wherein the entrance to the cutter is pro-- A -herei'nafter more particularly "described,

ting implement comes wire. a -V Another object of the invention isto provide a novel wire cutter of this character wherein the blade of the bayonet serves as vided with automatic means to close vthe entrance after the wire enters the cutter so that it is impossible 'forthe' wire to accident ally slip through the entrance, thereby:

greatly facilitating cuttingof the wi e."

With'the above and'other objects in'view, the invention consists in theimpiovedconstruction and arrangement of parts, to-be fully claimed and illustrated in theaccoinpanying drawings, 'inwhich":"

Figure 1 isa side elevation of'a bayonetcharged wire.

a liorward extension, curved and attached to theijhandle at its innerend and parallelto; and spaced fromthe-handle, ad-ix 1 v jacent its point of attachment, theretol" The Qv tension forms-a compartment, Theribcandiw in contact with the anembodime'nt of the-"invention,

' igure'Q is ajlongitudinal sectional viewthrough the chamber orcasingof the cutter,

3-3 of Figure-2 bers of-the cuttingmechanism, I.

.Referring to the drawings,' -A A a bayonet of the standardtype gincluding a v Wire; cutter constructed in accordance with Figureilisa detail view ofthe jaw memgunbarrel socket Band a handle 1G. Theze; Y inner surface of the socket islined with-insulating material D.-' which. insulates ,the; 3' l bayonet and the cutting mechzini'smgfrom I 7Q should come in contact with-v electrically- The portionr5' of the bayonet I c at the hilt thereof, is enlargediand provided the gun barrel; in case the cutting mechanism with a downwardly projecting rib;8., -The hilt. portion: of the bayonet is provided with space between the rib -and; the yielding exother,

isposed withinlthe space compart yielding,

extension having enlarged inwardly j'proecting portions extendmg toward each ment is a novel-wire cuttingmechanisin;com-

.site portionof-i said'endisan;enlarged;ex-; v. tension 13 which-isbifurcatedas it-14.x: The;.. f

extension l3 isadaptedlto straddlefthe' lug- 8.

from the center to the sides iofsaid exten sionto -provide anedge. 15 adapted: tog bend thewire in the cutting operation; -It ;wi;lli2 1 be noted that the bifurcated extension-"1'3 and the'exte'nsioni 12 extend beyond one side faceof'theij aw'ild {This is to 1 permit the ja'ws to'be' pivoted so thatthecutting edges thereof are disposed closely adjacent eachz-r, other. -The longitudinalfedgeof the jaw '10" 1 f is canted toprovide a cuttin'gfledge 16. f"

prising jaw members'lO and 1 1.," One'end" i portionofthe jaw' 10 is provided withlanextension 12 while projecting from theoppQ-fl The extension- 12' has its edges canted",.

"cated extensions E1:7"and" 18' which project Figure 3Jis a section taken ron', theline to;

j aw 10. The'end wall of the bifurcated extension 18 is provided with a V-shaped groove 19 adapted to receive the bending edge of the extension, while the longitudinal edge oi the jaw member 11 is canted to provide a cutting edge 20. The extensions 12 and 18 are provided with the registering openings through which a pin 21 extends to pivot-ally connect the jaw members. By this means, the jaw members have their cutting edges disposedclosely adjacent each other and are arranged if necessary, to pass one "another in the cutting operation so that it is impossible for the wire to escape from the cutters without being severedl The extension 13 is adapted to' be'pivotally connected to the lug 8 by means of a pivot pin 23, while the extension 1.? is

adapted to be pivotally connected to the lug 9 by means of the'pivot pin 24. It will thus be'seen that the j aw members 10 and 11 are not only pivoted to each other but to the -portion 5 and the extension 7 so that they 'portion 5,-sa id plates being secured are permitted to move longitudinally of the compartment. During this movement the pivot pin moves toward and substantially into alignment with the pins 23 and 24:.

This naturally causes yielding movement of the extension? so asto permit the jaws 10 and 11'to pass each other in the cutting of the wire. 'A coveror plate 25 is disposed on each side of the opening 6 in the enlarged to the screws 26, 27, 2S and and 28 are disposed bayonet by means of 29. The screws 27 above the extension so that they do not interfere with the yielding movement of the extension. The lower portions of the plates -rextend beneath the extension and are disposed in spaced relationthereto so as not to interfere with the movement of the exten-' sion.v A spring 30 is disposed within the compartment, and has a portion thereof em bracing the screw 29. The end portion 31 ot the spring engages the wall of the opening-adjacent the hilt of the bayonet while the end portion'32 of the spring is curved towards the hilt of the bayonet and adapted to engage the end portions 33 and 3a of the jaw members 10 and 11, said portions preventing. contact of the spring with the edge of the extension 12. By this means Jthe jaws are normally held in spaced rel a ron to each other, or in other words, are in position to receive a wire.- The screws 26 and 27 are adapted to engagethe outer surrace of the aws 10 and 11 respectively to limit pivotal movement of said 1aws away from each other under pressure of the spring 30.

. Each of the plates 25, is provided with an elongated slot 35 which extends from "the extenslon T of the enlarged portion 5 and terminatesslightly beyond the intermediate portions of the opening or chamher. This opening is relatively wide so as blade A within the chamber so as to guide the arm 36. A spring 41 is secured at one end to the rear face of the arm 36 and at its other end to the portion of the enlarged portion 5 adjacent the extension 7. It will be noted that the last mentioned portion, and the forward ends of the plates project'beneath the end portion of the bayonetblade A so that the sharp edge of said blade at this point cooperates with the sharpened portions 39 and 40 of the arm 36 to efficiently guide the wire into the chamber formed through the cooperation of the plates 25 and the opening 6.

In the operation of the device, the wire will engage the lower edge of the blade A and be directed thereby into contact with the arm36. The pressure or weight of the" user upon the gun will cause the wire to swing the arm 36 downwardly, and pass into thev chamber transversely of the plates 25, portions of tllBWlle extending through the slots 35.

tween the jawjmembers 10 and 11 into engagement with the bending edge 15 whereupon the pressure of the-operator on the Continued forward movement of the user will cause the wire to pass begun willcause the wire to move the jaw members 11 and 10. toward each other. This pivotal movement, of the jaw members 10 and 11 will cause the sharpened edge 15 of the extension to bend the wire thereby-causing the jaw 11 to urge the extension outwardly to permit severing of the wire. It is of course'obvious that the pressure of the user against the wire is greater than the strength of the spring 30 so that the wire been severed the severed portions pass rear-- wardly over the end walls ot'the ,slots 35.

After the wire enters the chamber and comes in contact with the bending edge 15,

, may be readily severed. After the wire has the movement of the jawv members toward" each other will substantially cause the lower portion of the chamber to extend outwardly, in view of the factthatit is separated from the upper portion or bodyportion of the bayonet, by the opening 7. This movement will cause the roller tomove so as to properly enter the slot 40* through the medium of the spring 41 so that if the wire is not out upon the first thrust of the gun, the user may move the gun"rear wardly so as to permit the jaws to obtain jaws.

a new hold upon the wire. In this event,

of the wire from the chamber of the cutter.

After the wire has been cut, the severed portions of the wire, pass toward the: hilt of the bayonet whereuponthe pressure" of the spring 80 will force the jaw members 10 and 11 forwardly thereby opening the From the foregoing it will bereadily seen that this invention provides a novel formv of wire cutter wherein the cutting operation is performed similar to a pair of shears held in the hand, .but without requiring the user to move the cutters toward each other. All that is necessary is for the user to grasp the, gun firmly, the cutting members do the rest automatically. i

What is claimed is 1. A bayonet wire cutter comprising a body member having a chamber and an entrance opening extending through one end in the sides of the chamber, a pair of, aws,'-

each jaw having'bifurc'ated extensions on 'one end, said extensions projecting in opposite directions, one of the extensions of each jaw being engaged with each other, the remalnmg extension of each jaw-being pivoted to the body member, one having yielding support and a spring carried by said body member, said spring urging the cutting edges of the jaws, away from each other. e

2. A bayonet wire cutter comprising a body member having a chamber and an entrance opening extending through one end in the sides of the chamber, a pair of jaws, each jaw having bifurcated extensions on one end, said extensions projecting in opposite directions, one of the. extensions of each jaw being pivoted to the adjacentcextension of the opposite jaw, the remaining extension of each jaw being pivoted to the body member, one having yielding support and a spring carried by said body member, said spring urging the free ends of the aws away from each other, whereby the pressure of a wire inserted in the chamber and 'between the each other. r I

3.- A wire cutter comprisinga body memjaws will move the jawsitow-jard her having. a yielding extension disposed' 'u' closely adjacent the body member, the end portion of the extension and adjacent portion of the body member beingvertical1yspaced tov provide .amrecess with recesses whlch coact to-provlde a compartment-,cut-1 ting means comprisinga pair of pivotally connected jaws, said jaws having "extem sions, the extension of one jaw beingpive' oted to the body member in-"the recess,the

extension of .the'remaining jaw being piv-.

otedto' the extension of the body. member,

and means carried by the body member away from-each other, the extension of the body member, being movable according to the movement of the pivotal connection of the jaws to each other...

4'. A yielding extension extending substantially in parallel relation thereto, the extension within the compartment for urging the j aws wire cuttercomprising an elongated shank of one of said jaw members be'ing pivoted to the body member in the recess,

the'shank of the remaining j aw member ,being pivoted to the extension, means' 'carried by the body member and disposed within the compartment for normally holding the pivot of the jaws to one sidefofthe alignedjfxf pivots of the shanks of the jaws, plates carried by the side portions of the body member and the extension and cooperating ;f

to provide a" chamber, said plates having longitudinally extending 'slots coactin-g, to

provide aguide, thelower portion of said plates extending beneaththe extension in spaced relation to the extension wherebysaid extension is'capable of adjusting itself 1 within the chamber according to the movement of the pivot of'the jaws relative to the pivots of the extensions of the jaws.

In testimony whereof hereunto'afiix my 7 signature.

PETER PAUL GRABOWSKY. 

